Waste fitting for lavatories and method of making the same



June 8 1926.

A. w. LIMONT WASTE: FITTING.FOR LAVATORIES AND METHOD OF MAKING THE SAME 2 Sheets-Sheet 1 Filed August 14 192 INVENTOR. fllexa/z derma'ziwiz BY June 8 1926. 1,587,967

. A. W. LIMQNT WASTE FITTING FOR LAVATORIES AND METHOD OF MAKING THE." SAME Filed Augu 12524 2 Sheets-Sheet 2 I I a 2 38 1 1 40 I I 4 z 4 a I I 4 r g 5 9 5 f I I I w; a

i} g 5i a i 1 E6 filexalza' rikzzmanfi f BY Patented June 8, 1926.

UNITEDASTATJES' PATENT OFFICE.

ALEXANDER w. rinvroivr, or nnrncnronr, connnorrcur.

WASTE FITTING FOR LAVATORIES AND METHOD OF MAKING- THE. SAME.

Application filed August 14, 1924. Seri aINo. 731,981.

The present invention relates to waste fittings, and an improved method of making the same, for use with the waste pipes or traps of lavatories, sinks,'basins, or the like, and has for an object to provide a novel method by which such fittings may be drawn or formed from wrought metal in a simple and economical manner to produce onepiece fittings, as distinguished from such fittings heretofore in usegand which consisted of a drawn shell and an internally threaded flanged collar inserted and fastened in one end thereof.

This flanged collar, as heretofore used, is made with a wall section thick enough .to have a standard size thread formed internally, and a flange of a thickness sufficient tomake a watertight joint by means of a ring of packing inserted between it and the body of the basin, or othervessel, and drawn up tight by screwing said collar part onto a plug connection projecting out of said vessel. While this method has heretofore been used almostuniversally, a great amount of trouble and damage has been caused by the loosening and separating of the collar from the body shell, due to excessive strain in making the joint tight, and quite frequentin, a relatively thick flange for strength in securing the fitting in a vessel, and a rela: tively thin main shell portion for lightness.

WVith the above and other objects in view, the several steps of my improved method are shown in the accompanyingv drawings, and the same will be hereinafter more fully described with reference thereto, and the invention will be finally pointed out in the claims. v

In the drawings:

Fig. l-is a vertical sectionalview of a blank shell after the first operation thereon of producing relatively thick wall portions;

Figs. 2 and 3 are vertical sectional views e i s the fo m ti n 9 e flanged n s ing, reces Fig. 4 is a vertical sectional view of a med in the wall;

t5 further step in which an annular groove is Figi5' is a view partly in section and I showing the fitting after the final step of threading;

Fig. 6 is a perspective view showing the fitting with a pull out plug screw-ed there-- Fig. 7 is a verticalsectional view showing a flanged blank shell, as used in a modification of the method Fig. 8 is a vertical sectional view show ing the same after the step of drawing the relatively thin portion of the shell;' I Fig. 9 is avertic'al' sectional view show.- ingthe shell of Fig. 8 in position in a forming die adapted to perform the step of rendering the outside diameter uniform;

Fig. 10 is a vertical sectional View of the.

shell, as formed by the dies shown in Fig. 9

Fig. 11 is a vertical sectional view of a further step in which an annular groove-is formed in the wallyand i I Fig. 12 is a view partly in section showing the fitting after, the final step ofthreading," and with a modified groove structure.

Similar referencecharacters indicate correspondlngparts throughout the several fig- "ures of the drawings.

In carrying out my improved method a tubular cup shaped blank or shell 20 is drawn from wrought metal, its wall adjacent the closed end being relatively thick, as at 2'1, fora given distance, while the remainder of the shell 'is relatively thin, the outside diameter being uniform for the entire length.

The closed end 22 0f the shell is next cut off along the line indicated in Fig. 1,. and

the upper end of the shell projecting above said member 24 to be formed into a lateral flange. A shapingdie 26 having a, rounded annular formingchannel27 is first engaged with the blank by a suitable pressureapplyan "i t a v1P ?l m r r' deep cuts therein,without weakening.

flanging shape 28 thereto, as indicated by dotted lines in Fig. 2, and full lines in Fig. 3. v

The next step consists in completing the Hanging operation to form a flat lateral flange 29by means I01 a die 30, having a right angular shouldered shaping portion, which cooperates with the upper suri'ace'of the member 24 to produce said flange.

The thin skirt portion of the shell may be 'gi've1i any desired dimension or, shape, and as shown'in Fig. 'tlie same is grooyed. as at 31, by suitable grooving rollers 32 and 33, in spaced relation to. the thickenedfp -n tioni21, and the skirtportion below said groove is drawn to a relatively smaller diameter. p A v H The fitting. is con pleted tapping standard threads 3% in the portion 21, which is of sufii cient thickness to permit relatively assembling in a basin, or the like,;tlie usual type of threaded fianged gpull out plug 35 is screwed into the flanged threaded end of the fitting.

In Figs. 7 thei e is illustrated a inodiiication o f theniethod, in which ablank I shell Bh haying relatiyely thick walls is provided at its open end with a lateral flange 37,.pro dnced,hysuitable dies At a point in spaced r'el a on to the 'fiange the shell" is drawn to p oduce relatively thin walled elongated skirt portion se ms relatively thick walled portion39 adjacent the flange, the interior diameter being uniform throughout the length. 1 v I Tlie, shell isutlie n sulii {ted tothe'a tionof suitable dies coinprisn g an apertured die all), the aperture. of whigh i's of a diameter equal to that of theouter diameter of the thin skirt, portion, and shouldered punch die ineinberl adapted to engagethe interigrof the shelhan doj a niaim etcr less than that Qiif i-lle interior oftli'e shell equal to lie j d itierence in thickness between the thickened portionfiil and the portion, 38.

Other means, as rollers, may be employed,

if desired. p v

3y, ne est su ab ep es ure apply means the (3 1e are l the thickened portion 59 niii'ardly, so tha t the thickness ofthe portion 39extends inwardly with refinest t h Q1 Q of thethilrpor t o'n 3.8, The e1p's ,@11d 2 'i'sthereupon cut off "longthe line int ated in r lDijQtilJjllt together, draw equalities or roughness that might be produced by the dies or other means for producing the thickened portion. v

The gror'iv'es may be or any desired form and placement, Fig. 4 showing a single groove in spaced relation to the thickened portion, while Fig. 11 shows a single groove adjacet the thickened portion, and Fig. 12 shows two spaced grooves, one of which is adjacent the tliiclieiied' portion.

With my improved method alitting is produced haying all the functionaladvan tages of fittings heretofore in use, and with advantages of strength, simplicity, economy, and itre edoin from damage tlie necessityfbr frequent repairs, not found in such previous devices. k v, I p

I have illustrated. and described preferred and satisfactory emhiidinients o'f iiiyihyention but it will be obi'io'us that chan es 3 .23

be nade therein, within the spirit and scope thereof, as tle'fiiied in the appendedclaiins.

Haring thus described my iiiveiitioii,ii hat I ,claim and desire to secure by Letters Pateiit is: i p

1. The herein described method or rtdiici ig waste from liollhii 'drawn metal, which consists iii drawing the metal to produce a relatively thick end portion aiid a relatitely thin skirt portion incontinuation of said relatively thick portion, bending said thick portion atone end to produce a relativelythick laterally ezgtendi'ngtlange andh 'relati thick cylindrical wall portion adjacent said stage, and cutting internal threads in said relatively thick cylindrical portion.

2. The herein d escrihed method or prodiice a rel'a tiycly thick end portion and a relativelyt n ski portion in continuation said relat vely thick portion, bendingsai'd thick portion-at one end to-producfe"a relati v cly thick laterally extendis 'flfange airda iela tively thick cylindrical wall portion 'ad-' jacen't said "flange, said relatiy efly th nportion toe "edi'ice'd otitslde ameter, '1: th

ic'al porti said relatiyely thick Samu- 4-. The herein described methodof p'ro i s s tin ,frem hb l which consis v v d uce a rela ively thick fend portion relat y 'h'in "skirt portion; in cont-'1 W ts in drawing the metal toprotively thick laterally extending flange and a relatively thick cylindrical wall" portion ad-.

5. The herein described method of pro' ducing waste fittings from hollow drawn metal, which consists in drawing the metal to produce a relatively thick end portion and a relatively thin skirt portion in continuation of said relatively thick portion, bending said thickend portion at one end to produce a relatively thick laterally extending flange. and a relatively thick cylindrical wall portion adjacent said flange, spinning an annular groove in said relatively thin skirt portion, drawing said relatively thin portion to a relatively reduced diameter below said groove, and cuttinginternal threads in said relatively thick cylindrical portion.

6. The herein described method of producing waste fittings from hollow drawn metal, which consists in drawing the metal to produce a relatively thick end portion and a relatively thin skirt portion in continuation of said relatively thick portion of an outside diameter greater than the inside diameter of said relatively thick portion, bending said thick portion at one end to produce a relatively thick laterally extending flange and a relatively thick cylindrical wall portion adjacent said flange, and cut.- ting internal threads in said relatively thick cylindrical portion.

7. The herein described method of producing waste fittings from hollow drawn metal, which consists in drawing the metal to produce a relatively thick end portion and a relatively thin skirt portion in continuation of said relatively thick portion of an inside diameter greater than the inside diameter of said relatively thick portion, bending said thick portion at one end to produce a relatively thick laterally extending flange and a relatively thick cylindrical wall portion adjacent said flange, drawing said relatively thin portionto arelatively reduced outside diameter, and cutting internal threads in said relatively thick cylindrical portion.

, 8, The herein described methodof producingv waste fittings from hollow drawn metal, which consists in drawing a cylindrical cup-shaped shell closed at. one end,

cutting off said closed end to produce a tubular shell open at both ends, drawing the metal to produce a relatively thick end .por-

tion and a relatively thin skirt portion in continuation of said relatively thick portion, bending said thickportion at one end to produce a relatively thick laterally extending flange and a relatively thick cylin' drical wall portion adjacent said flange, and

cutting internal threads in saidrelatively thick cylindrical portion. I

9. A waste littingformed of hollow drawn 'metal, comprising a cylindrical shell having an end portion of relatively thick cross section, a skirt portion of relatively thin cross section in integral continuation of said thick portion, a flange bent laterally at the end of said thick portion, said thick portion being threaded interiorly.

10. A waste fitting formed of hollow drawn metal, comprising a cylindrical shell having an end portion of relatively thick thin cross section in integral continuation of said thick portion, the inner diameter of said thick portion being less than that of the cross section, a skirt portion of relatively;

thin portion immediately adjacent thereto,

a flange bent laterally at the endot said thick portion, said thick portion being threaded interiorly.

11. A waste fitting formed of hollow drawn meta-l, comprising a cylindrical shell having an end portion of relatively thick cross section, a skirt portion of relatively thin cross section in integral continuation of said. thick portion, the inner diameter of said'thick portion being less than that of the thin portion immediately adjacent thereto, a flange bent laterally at the end of said thick portion, said thick portion being.

threaded interior-1y, and a shoulder integrally formed in said thin portion intermediate its ends.

Signed at Bridgeport, in the county of Fairfield and State oi. Connecticut this 12th,

day of August, A. D., 1924.

ALEXANDER W. LIMONT. 

